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malignant mesothelioma

(muh-LIG-nunt MEH-zoh-THEE-lee-OH-muh)
A rare type of cancer in which malignant cells are found in the lining of the chest or abdomen. Exposure to airborne asbestos particles increases one's risk of developing malignant mesothelioma.
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Drawing shows parts of the body where malignant mesothelioma may form, including the pleura (the tissue that lines the chest cavity and covers the lungs), the pericardium (the tissue that surrounds the heart), the peritoneum (the tissue that lines the abdomen and covers most of the organs in the abdomen), and the testicles. The heart and lungs are also shown.Enlarge this image in new window
Malignant mesothelioma forms in the tissue that lines the chest or abdomen, including the pleura (the tissue that lines the chest cavity and covers the lungs) and the peritoneum (the tissue that lines the abdomen and covers most of the organs in the abdomen). Malignant mesothelioma may also form in the pericardium (the tissue that surrounds the heart) or the testicles, but this is rare.
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